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Finding the Third Proportional to 2,216 and 4,396

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Solution

The third proportional to 2,216 and 4,396 is: 8,720.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,216 : 4,396 = 4,396 : x
  2. Step 2: Convert to fraction form
    2,216/4,396 = 4,396/x
  3. Step 3: Cross multiply
    2,216x = 4,396 × 4,396
  4. Step 4: Simplify right side
    2,216x = 19,324,816
  5. Step 5: Solve for x
    x = 19,324,816/2,216
  6. Step 6: Final answer
    x = 8,720.58

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Why These Related Problems?

These problems maintain the same ratio (1.98) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.